Search found 439 matches

by D Sceviour
Tue Aug 20, 2019 12:47 pm
Forum: Computer Chess Club: General Topics
Topic: The advantages of NN Learning engines..........
Replies: 8
Views: 432

Re: The advantages of NN Learning engines..........

I forced LCZero to play the same opening 5 times and after it lost the first two games I gave it to analyze and when it play from the 3rd game on it avoided playing the same losing moves which made it to lose against Stockfish and it won game 3, 4 and 5. PS: I was wondering if ab engines have this ...
by D Sceviour
Sun Aug 11, 2019 3:33 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SYZYGY question
Replies: 7
Views: 681

Re: SYZYGY question

bob wrote:
Sun Aug 11, 2019 2:21 am
What am I doing wrong here or is there a bug in this fairly old code for handling your endgame tables?
Must be. Nothing wrong here with Schooner and the 6-piece egtb.

Code: Select all

  0	+326.45	1	0:00.00	b6b7
For a guess, maybe try looking at the en passant flags in the move list for an error.
by D Sceviour
Sun Aug 04, 2019 3:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: killer index by "ply" or "ply"
Replies: 16
Views: 1623

Re: killer index by "ply" or "ply"

I do clear all killers when search begins but not each ply+1 killers at each pvs node. Writting this I understand that it is worthless to store killers index by "real half move" as I fully clear the killer table ... :oops: But I still don't get why Xiphos is clearing ply+1 killers. Xiphos change lo...
by D Sceviour
Sat Jul 27, 2019 7:50 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney July
Replies: 33
Views: 2583

Re: On-line engine blitz tourney July

Thank you for trying. See everyone next time.
by D Sceviour
Tue Jul 23, 2019 1:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: So called backward analysis
Replies: 5
Views: 630

Re: So called backward analysis

The usual Winboard command for taking back a move is "undo". The "remove" command is documented for xboard protocol but I was never able to find an occurance of it ever sent by Winboard. Instead, an undocumented "back [n]" command may be sent by Winboard, Arena or other GUI. Winboard will remember t...
by D Sceviour
Tue Jul 23, 2019 1:20 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Trying to find a weird mate in 1...
Replies: 15
Views: 1419

Re: Trying to find a weird mate in 1...

Schooner solves this in 1 ply, 0.68 seconds and 1.7 million nodes. Still, there is a point to be made that millions of nodes seems large for a mate in 1, so there is a quiescence explosion. Might be worth tracing to look at the intricacies of the position.
by D Sceviour
Thu Jul 11, 2019 7:03 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: A pre-calculated pawn hash table ?
Replies: 28
Views: 2321

Re: A pre-calculated pawn hash table ?

Pawn structures where a player has a "bad" formation maybe arent important to cache because the "elo cost" of the "extra work" might be made up for by the fact that one side already has a "bad position" and the game is likely already heading towards a non-draw result. Yes. This is the basis of the ...
by D Sceviour
Sun Jul 07, 2019 7:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Eucalyptus - KPK Bitbases Generator
Replies: 14
Views: 2714

Re: Eucalyptus - KPK Bitbases Generator

For what is it worth, it might be useful to review the Computer Chess Club Charter item 4 on discussions about the law: Once a member gains access to the message board, he may read all messages and post new or response messages with the proviso that these new or response messages: 1. Are, within rea...
by D Sceviour
Thu Jul 04, 2019 12:12 pm
Forum: Computer Chess Club: General Topics
Topic: Schooner Version 2.1
Replies: 11
Views: 1731

Re: Schooner Version 2.1

I am not sure we understand each other correctly - CuteChess only adjudicates here given my Syzygy_5 path, when a given position appears, but I only used adjudication, because I thought both Schooner and ArasanX would use the Syzygy_5 also during search (ArasanX sure does), after I added the path t...
by D Sceviour
Wed Jul 03, 2019 5:51 pm
Forum: Computer Chess Club: General Topics
Topic: Schooner Version 2.1
Replies: 11
Views: 1731

Re: Schooner Version 2.1

BTW is it normal that it still gives a +3 eval when it is a forced exchange to available 5 men Syzygy? (one time it played the move itself - one time opponent forced it one ply later) Yes, this is normal. In the first game, the engine calculates for six pieces (not five) and scores accordingly with...